Question: What is the population of Cambridge, Massachusetts in the year 1880?
Paraphrase: What is the number of inhabitants in Cambridge, Massachusetts in the year 1880?
SPARQL (Wikidata): SELECT ?obj WHERE { wd:Q49111 p:P1082 ?s . ?s ps:P1082 ?obj . ?s pq:P585 ?x filter(contains(YEAR(?x),'1880')) }